support elastic-observability-automation in pull-requests.org-wide.json

Otherwise no docs builds are triggered automatically.

See elastic/apm-server#14119

Author: v1v

.buildkite/pull-requests.org-wide.json

@@ -9,7 +9,7 @@
         "admin",
         "write"
       ],
-      "allowed_list": ["github-actions[bot]", "renovate[bot]", "mergify[bot]", "dependabot[bot]", "elastic-renovate-prod[bot]"],
+      "allowed_list": ["github-actions[bot]", "renovate[bot]", "mergify[bot]", "dependabot[bot]", "elastic-renovate-prod[bot]", "elastic-observability-automation[bot]"],
       "build_on_commit": true,
       "build_on_comment": true,
       "trigger_comment_regex": "run docs-build ?(?<rebuild_opt>rebuild)? ?(?<warn_opt>warnlinkcheck)? ?(?<skip_opt>skiplinkcheck)?",